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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_SOCKET_TCP_SERVER_SOCKET_H_
#define NET_SOCKET_TCP_SERVER_SOCKET_H_
#include <memory>
#include "base/macros.h"
#include "net/base/completion_once_callback.h"
#include "net/base/ip_endpoint.h"
#include "net/base/net_export.h"
#include "net/socket/server_socket.h"
#include "net/socket/socket_descriptor.h"
#include "net/socket/tcp_socket.h"
namespace net {
class NetLog;
struct NetLogSource;
// A server socket that uses TCP as the transport layer.
class NET_EXPORT TCPServerSocket : public ServerSocket {
public:
TCPServerSocket(NetLog* net_log, const NetLogSource& source);
// Adopts the provided socket, which must not be a connected socket.
explicit TCPServerSocket(std::unique_ptr<TCPSocket> socket);
~TCPServerSocket() override;
// Takes ownership of |socket|, which has been opened, but may or may not be
// bound or listening. The caller must determine this based on the provenance
// of the socket and act accordingly. The socket may have connections waiting
// to be accepted, but must not be actually connected.
int AdoptSocket(SocketDescriptor socket);
// net::ServerSocket implementation.
int Listen(const IPEndPoint& address, int backlog) override;
int GetLocalAddress(IPEndPoint* address) const override;
int Accept(std::unique_ptr<StreamSocket>* socket,
CompletionOnceCallback callback) override;
int Accept(std::unique_ptr<StreamSocket>* socket,
CompletionOnceCallback callback,
IPEndPoint* peer_address) override;
// Detaches from the current thread, to allow the socket to be transferred to
// a new thread. Should only be called when the object is no longer used by
// the old thread.
void DetachFromThread();
private:
// Converts |accepted_socket_| and stores the result in
// |output_accepted_socket|.
// |output_accepted_socket| is untouched on failure. But |accepted_socket_| is
// set to NULL in any case.
int ConvertAcceptedSocket(
int result,
std::unique_ptr<StreamSocket>* output_accepted_socket,
IPEndPoint* output_accepted_address);
// Completion callback for calling TCPSocket::Accept().
void OnAcceptCompleted(std::unique_ptr<StreamSocket>* output_accepted_socket,
IPEndPoint* output_accepted_address,
CompletionOnceCallback forward_callback,
int result);
std::unique_ptr<TCPSocket> socket_;
std::unique_ptr<TCPSocket> accepted_socket_;
IPEndPoint accepted_address_;
bool pending_accept_;
DISALLOW_COPY_AND_ASSIGN(TCPServerSocket);
};
} // namespace net
#endif // NET_SOCKET_TCP_SERVER_SOCKET_H_
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